ATS 309-854-4290 STAGE 5 ALLISON LCT1000 TRANSMISSION PACKAGE 4WD 2004.5-2005 6.6L LLY DURAMAX

Product Description

The ATS 309-854-4290 Stage 5 Allison LCT1000 Transmission Package is a top-tier performance upgrade engineered for 2004.5-2005 GM Silverado and Sierra trucks equipped with the 6.6L LLY Duramax diesel and 4WD drivetrain. Designed for extreme power levels, heavy towing, and high-performance applications, this Stage 5 package delivers unmatched durability, torque capacity, and transmission reliability.

This complete ATS package includes a fully built Stage 5 Allison LCT1000 automatic transmission, ATS Five Star torque converter, and ATS deep transmission pan. ATS enhances the Allison platform with billet internal components, upgraded clutch packs, and precision calibration to handle significantly higher horsepower and torque than factory units.

The included Five Star torque converter improves torque multiplication and throttle response, while the deep transmission pan increases fluid capacity and cooling efficiency. Together, these components help reduce heat, improve shifting performance, and extend transmission life under the most demanding conditions.

Built for competition-level performance and heavy-duty use, the ATS Stage 5 Allison package is ideal for trucks with extensive modifications, large turbo setups, or extreme towing requirements.

FAQ

What is included in the ATS Stage 5 Allison package?
This package includes a fully built ATS Stage 5 Allison LCT1000 transmission, ATS Five Star torque converter, and ATS deep transmission pan.

What makes Stage 5 different from lower stages?
Stage 5 includes upgraded billet internal components, increased clutch capacity, and is designed for extreme horsepower and torque applications.

Is this transmission good for high horsepower builds?
Yes. This package is designed for high-performance and competition-level builds requiring maximum durability.

Does this improve towing performance?
Absolutely. The increased torque capacity and improved cooling make it ideal for heavy towing and hauling.

Will this fit my truck?
This package is designed specifically for 2004.5-2005 GM trucks with the 6.6L LLY Duramax and 4WD configuration.

FITMENT
2004.5-2005 Chevrolet Silverado 2500HD 6.6L LLY Duramax Diesel 4WD
2004.5-2005 Chevrolet Silverado 3500 6.6L LLY Duramax Diesel 4WD
2004.5-2005 GMC Sierra 2500HD 6.6L LLY Duramax Diesel 4WD
2004.5-2005 GMC Sierra 3500 6.6L LLY Duramax Diesel 4WD

Specifications for ATS 309-854-4290